might be useful to have a dialog option to enable users to add basic info - select type, enter model #, H-W-D, and/or maybe select similar product type and re-size to "simulate" pending adding an actual model.
i know for me, given space constraints on uiltity rooms in recording studios, having the equipment sized correctly (as simple boxes) is much more important than the detailed looks when configuring the approximate systems layout for the engineers to refine later.